Two resistances R₁ = X Ω and R₂ = 1 Ω are connected to a uniform-resistivity wire AB as shown. The wire radius varies linearly from 0.2 mm at A to 1.0 mm at B. A galvanometer connected at the midpoint (50 cm from each end) shows zero deflection. Find X.
Physics · Current electricity · Electrical Instruments: Galvanometer, Ammeter, Voltmeter & Potentiometer
Two resistances R₁ = X Ω and R₂ = 1 Ω are connected to a uniform-resistivity wire AB as shown. The wire radius varies linearly from 0.2 mm at A to 1.0 mm at B. A galvanometer connected at the midpoint (50 cm from each end) shows zero deflection. Find X.
